2 fan connectors – Kontron CP6-BP8-P47-STD User Manual

Page 9

CPCI Backplane

PD11: CP6-BP8-P47-STD

RID 24229 PD11, Rev. 01

Page 9

5.2

Fan Connectors

The backplane is equipped with four connectors for supplying power for fan(s) and for con-
necting a fan speed control device. JP21/23 (FAN1/2), are 3-contact male connectors which
supply +12V for fan operation as well as the possibility to connect to a speed control device
for regulating air flow within the system sub-rack. JP22/24 (NTC1/2), are 2-contact male con-
nectors which provide a separate connection for a speed control device and are designed to
be used in conjunction with JP21/23.

For fans that have their own speed control or where no control is required, pins 1 and 2 of
JP21/23 can be used. For external speed control of fans, pins 2 and 3 of JP21/23 and pins 1
and 2 of JP22/24 are used. Pin 3 of JP21/23 and pin 2 of JP22/24 are connected internally on
the board side to each other.

External air flow regulation can be accomplished using a negative thermal coefficient (NTC)
device connected to JP22/24

Figure

4: Orientation and Pinouts of CP6-BP8-P47-STD Connectors JP21/23 and

JP22/24

JP21/23

JP22/24

Table 4: Pinout of CP6-BP8-P47-STD
JP21/23 Connector

Pin

Function

GND

+12V

NTC1/2

Table 5: Pinout of CP6-BP8-P47-STD
JP22/24 Connector

Pin

Function

GND

NTC1/2